Write the important word // important relationship and important condition

Transcription

1 2 3 Example 1 What is meant by physical quantity? [ 1 Mark ] Answer The quantity that can be measured Example 2 What is meant by focal length? [ 1 Mark ] Answer 1 Write the important word // important relationship and important condition The distance between optical centre and focal point Or 2 Can use equations, symbols, formula (explain),diagram or graphs and other suitable methods to explain your answer Example 3 What is meant by pressure? Answer Force acting perpendicularly to a surface per unit area OR Pressure = Force Area [1 mark] Example 4 State the Hooke s Law. Answer The extension of a spring is directly proportional to the force provided the elastic limit is not exceeded [1 mark]

2 Error CHAPTER 1 : INTRODUCTION TO PHYSICS NO TERMS DEFINITIONS / MEANING FORMULA 1. Physical quantities 10. Systematic errors 11. Random error 2. Base quantities 12. Parallax error 3. Derived quantities 13. Zero error 4. Base units 5. Derived units CHAPTER 2 : FORCES AND MOTION 6. Consistency 7. Accuracy NO TERMS DEFINITIONS / MEANING FORMULA 1. Vector quantity 8 Sensitivity 2. Scalar quantity 3. Distance 4. Displacement 5. Speed 6. Velocity

3 Gravitational field 7. Acceleration 8. Deceleration 9. Inertia 20. Gravitational field strength 21. Gravitational acceleration 22. Free fall 10. Mass 23. Weight 11. Momentum 12. Principle of conservation of momentum 24. Newton s Second Law of Motion 25. Resolution of forces 13. Elastic collision Newton 14. Non-elastic collision Force 15. Unbalanced / net / resultant force 16. Balanced forces / Forces in equilibrium 17. Force / Impulsive force 27. Energy 28. Work done 29. Power watt 18. Impulse 31. Kinetic energy

4 Gravitational potential energy 33. Density 34. Principle of Conservation of energy CHAPTER 3 : FORCES AND PRESSURE NO TERM DEFINITION / MEANING FORMULA 1. Pressure 2. 1 pascal or 1 N m Efficiency 3. Atmospheric pressure 36. Elasticity 4. Pascal s Principle 37. Hooke s Law 5. Buoyant force 38. Elastic limit 6. Archimedes Principle 39. Force constant / spring constant 7. Bernoulli s Principle 40. Elastic potential energy

5 10 11 CHAPTER 4 : HEAT NO TERM DEFINITION / MEANING FORMULA 1. Thermal equilibrium CHAPTER 5 : LIGHT NO TERM DEFINITION / MEANING FORMULA 1. Law of reflection 2. Lower fixed point / ice point 2. Principal axis of a curved mirror 3. Upper fixed point /. Steam point 3. Centre of curvature,c 4. Heat capacity 4. Focal point, F of a concave mirror 5. Specific heat capacity 5. Focal point, F of a convex mirror 6. Specific latent heat of fusion 6. Real image 7. Specific latent heat of vaporisation 7. Virtual image 8. Boyle s Law 8. Reflection of light 9. Charles Law 9. Refraction of light 10. Pressure Law 10. Law of refraction 11. Absolute zero 11. Refractive index, n 12. Real depth

6 Apparent depth 14. Critical angle, c CHAPTER 6 : WAVES NO TERM DEFINITION / MEANING FORMULA 1. Wave 15. Total internal reflection 2. Vibration / oscillation 16. Focal point, F of a lens 3. Transverse wave 17. Focal length, f 4. Longitudinal wave 18. Power of lens 5. Wavefront 19. Linear magnification 6. One complete oscillation 7. Amplitude, a ( SI unit : m) 8. Period, T (SI unit :s) 9. Frequency, f ( SI unit : Hz) 10. Wavelength, λ 11. Damping 12. Natural frequency

7 Resonance 26. Electromagnetic waves 14. Reflection of waves 15. Refraction of waves CHAPTER 7 : ELECTRICITY NO TERM DEFINITION / MEANING FORMULA 16. Diffraction of waves 1. Electric current 17. Interference of waves 2. 1 ampere 18. Coherent waves 3. Electric field 19. Principle of Superposition 4. Potential difference 20. Constructive interference 5. 1 volt 21. Destructive interference 6. Resistance 22. Audio waves 7. Ohm s Law 23. Infrasound 8. Series circuit 24. Ultrasound 9. Parallel circuit 25. Electromagnetic spectrum

8 Electromotive force (EMF) 11. Internal resistance, r 9. Transformer 10. Step-up transformer 12. Electrical power 11. Step-down transformer 12. Ideal transformer CHAPTER 7 : ELECTROMAGNETISM NO TERM DEFINITION / MEANING FORMULA 1. Electromagnet 13. Eddy current 14. National Grid Network 2. Magnetic field 3. Catapult field CHAPTER 9 : ELECTRONIC NO TERM DEFINITION / MEANING FORMULA 4. Electromagnetic induction 1. Thermionic emission 5. Lenz s Law 2. Cathode ray 6. Faraday s Law 3. Semiconductor 7. Direct current 4. Doping 8. Alternating current 5. n-type semiconductor

9 p-type semiconductor 7. p-n junction CHAPTER 10 : RADIOACTIVITY NO TERM DEFINITION / MEANING FORMULA 1. Proton number,z 8. semiconductor diode 2. Nucleon number, A 9. Forward bias 3. Isotopes 10. Reverse bias 4. Radioactivity 11. Rectifier 5. Radioactive decay 12. Half-wave rectification 6. Radiation 13. Full-wave rectification 7. Ionising effect 14. Transistor 8. Half-life 15. Logic gates 9. Radioisotopes 16. Truth table 10. Atomic mass unit (amu or u) 11. Nuclear fission

10 Chain reaction 13. Nuclear fusion 14. Einstein s Principle 1 2 Give the physics concept involved or observation Give the explanation or reason 3 Can use diagram to explain the answer

11 22 23 Example 1 A car moves along a sharp bend of a road with a uniform speed is accelerated. Explain why? Answer The direction of the car is changed The velocity changes The car is accelerated because acceleration is the rate of change of velocity Example 2 [ 3 Marks ] Question 2.1 Diagram 2.1 shows a skydiver falls freely downwards before the parachute open. Rajah 2.1 menunjukkan penerjun jatuh secara bebas sebelum payung terjun terbuka. Diagram 2.1 Rajah 2.1 Explain why the skydriver must open up his arms and legs wide when fall freely as shown in diagram. Terangkan mengapa penerjun mesti membuka tangan dan kaki apabila jatuh secara bebas seperti dalam rajah. Explain why a sea breeze occurs during the daytime?. Answer The specific heat capacity of water > sand(land) Sand heat faster than water The air above the land is heated and rises and its place is taken by cooler air above the sea moving inland // convection currents OR [4 Marks ] [ 4 marks ] Question 2.2 Explain why the safety belt used by a car driver is wide and can be slightly lengthen when the driver is jerked forward. Terangkan mengapa tali pinggang keselamatan yang digunakan oleh pemandu kereta adalah lebar dan boleh memanjang apabila pemandu terhumban kehadapan... [4 marks]

12 24 25 Question 2.3 A ball is thrown upwards and catches up again by a boy later. Explain what happens to the motion of the ball as it moves upwards and downwards. Seorang budak melambung sebiji bola ke atas dan kemudian menangkap bola itu semula.terangkan pergerakan bola itu ke atas dan ke bawah Question 2.4 Explain how the forces between the molecules caused the elasticity. Jelaskan bagaimana daya antara molekul mewujudkan sifat kekenyalan... [4 marks] Explain why the boat is able to float and the sinking levels of the boats are different in the river and in the sea. Terangkan mengapa kapal itu boleh terapung dan paras kapal yang tenggelam berbeza di dalam sungai dan di dalam laut?.... Question 2.6 [4 marks] Diagram 2.6 shows a boy jumps out of the boat onto the river bank. By using the relevant physics concept, explain why the boat moves away from the jetty as he jumps Rajah 2.6 menunjukkan seorang lelaki melompat keluar daripada bot kepada tepi sungai.dengan menggunakan konsep fizik,terangkan mengapa bot bergerak jauh daripada jeti selepas dia melompat. Question 2.5 [ 4 marks] Diagram 2.5 shows two boats of the same weight floating on the surface of water in the sea and in the river. Rajah 2.5 menunjukkan dua buah kapal berjisim sama, terapung di permukaan sungai dan di permukaan laut. Diagram 2.6 Rajah [4marks] Boat in the sea Bot di dalam laut Boat in the river Bot di dalam sungai Diagram 2.5 Rajah 2.5

13 26 27 Question 2.7 Digram 2.7 shows a girl on a recreational trampoline. The spring-action of the trampoline naturally makes the girl bounce up and down. Rajah 2.7 menunjukkan seorang kanak-kanak perempuan di atas sebuah trampolin rekreasi. Kesan keanjalan spring trampolin menyebabkan kanak-kanak itu melompat-lompat ke atas dan ke bawah.. Explain why the base of the pillar is built with a large surface area..... Question 3.2. [2 marks] During the World Cup, a penalty kick made by Ballack is in a curved path as shown in Diagram The ball which is kicked to spin moves in a curved path. Figure shows the air flow around the spinning ball. Trampoline Trampoline Digram 2.7 Rajah 2.7 Explain how the spring-action of the trampoline can push the girl upward. Explain your answer in terms of the transformation of energy. Terangkan bagaimana tindakan keanjalan spring trampolin itu membolehkan kanak-kanak itu melompat ke atas.terangkan jawapan anda dari aspek perubahan tenaga yang terlibat.... Question 3.1 [4 marks] Diagram 3.1shows a part of a structure of a long bridge. The pressure of the bridge is applied to the base of the bridge which is fixed to a seabed underwater. The bridge is supported by two pillars. Diagram Diagram Explain why the path taken by the spinning ball is curved [ 3 marks ] Question 3.3 Diagram 3.1 Ballast tank Diagram 3.3 Diagram 3.3 shows the internal structure of a submarine and the position of ballast tanks.

14 28 29 Explain how a submarine that floats on the sea surface can sink underwater. Rajah 3.3 menunjukkan strukturdalaman bagi kapal selam dan kedudukan tangki ballast. Terangkan bagaimana kapal selam yang terapung pada permukaan boleh tenggelam [ 3 marks] Question 3.4 Diagram 3.4 shows a vacuum cleaner. Switch The shoes in Diagram is more suitable to used for jogging along the beach compared to the shoes in Diagram Explain why? Kasut dalam rajah3.5.2 adalah lebih sesuai digunakan berjogging sepanjang pantai berbanding kasut dalam rajah Terangkan mengapa?.. [4 marks] Dust bin Fan Motor Question 3.6 Dust Diagram 3.6 shows a cargo ship floats on sea water. The water level is at R as indicated by the Plimsoll line. Rajah 3.6 menunjukkan sebuah kapal kargo yang terapung di dalam air laut. Aras air adalah pada R seperti yangn ditunjukkan oleh garis Plimsoll. Explain how atmospheric pressure applied in working principle of a vacuum cleaner? Terangkan bagaimanakah tekanan atmosfera digunakan dalam prinsip kerja sebuah pembersih vakum. Diagram [ 3 marks] Ouestion 3.5 Diagram 3.5 shows two pairs of shoes used by a lady. The shoes in Diagram is used when she is going for work in office and the shoes in Diagram is used when she went for jogging. Rajah 3.5 menunjukkan dua pasang kasut digunakan oleh perempuan.kasut pada rajah digunakan apabila beliau ke pejabat untuk bekerja dan kasut pada rajah digunakan untuk berjogging. Diagram 3.6 Rajah 3.6 Why does an iron nail sink in water but a cargo ship with a huge mass floats? Mengapakah paku besi tenggelam didalam air tetapi kapal kargo dengan muatan yang besar terapung? [2 marks] Diagram Diagram 3.5.2

15 30 31 Ouestion 3.7 Diagram 3.7 shows rod A and rod B of different densities are immersed in water. Rajah 3.7 menunjukkan rod A dan rod B yang berbeza ketumpatan ditenggelamkan dalam air. Question 3.9 The aircraft obtains its lift when flying due to a difference in pressure of the air between the upper and bottom sides of the wings. Explain how this difference in pressure is produced. Sebuah pesawat udara terangkat semasa terbang disebabkan oleh perbezaan tekanan udara di antara bahagian atas dan bahagian bawah sayap. Terangkan bagaimana perbezaan tekanan ini dihasilkan Diagram 3.7 [3 marks] Rajah 3.7 Explain why the rods float in water and why B sinks deeper than A. Terangkan mengapa rod A terapung dalam air dan rod B lebih tenggelam daripada A... Question 4.1 Diagram 4.1 shows a seaside during the day. Rajah 4.1 menunjukkan tepi pantai semasa siang.... Ouestion 3.8 [4 marks] Based on Diagram 3.8 Explain briefly how the load can be lifted up when the small piston X is pressed down. Berdasarkan Rajah 3.8 Terangkan bagaimana pemberat dapat diangkat apabila omboh kecil X ditekan kebawah Using the specific heat capacity concept, explain why sea breeze occurs during day time. Dengan menggunakan muatan haba tentu,terangkan mengapa bayu laut dihasilkan semasa waktu siang Diagram [4 Marks ]... [4marks]

16 32 33 QUESTION 4.2 Diagram 4.2 shows a tightly rolled paper on an iron rod and is heated. (Paper will be burnt when the temperature reaches C) Rajah 4.2 menunjukkan kertas yang dibalut dengan ketat pada sebatang besi dan kemudian dibakar. (Kertas akan terbakar apabila suhunya mencapai C). Question 4.4 Diagram 4.4 shows two cups of coffee of equal mass being cooled by adding a few pieces of ice cubes. Rajah 4.4 menunjukkan dua cawan kopi berjisim sama disejukkan dengan menambah beberapa ketulan ais. Ice Ice Ais Paper Iron rod Bunsen burner Diagram 4.2 Rajah 4.2 Explain what happens to the paper when it is initially heated? Terangkan apakah yang berlaku kepada kertas pada mula ia dipanaskan? [ 4 marks] QUESTION 4.3 Cup A Cawan A Diagram 4.4 Rajah 4.4 Cup B Cawan B Initially, each cup contains 0.5 kg of coffee at 75.5 o C. It is observed that both cups of coffee reach a final temperature of 25 o C at the same time. Pada awalnya, setiap cawan mengandungi 0.5 kg kopi pada 75.5 o C. Diperhatikan bahawa keduadua cawan kopi mencapai suhu akhir 25 o C pada masa sama. Which cup of coffee requires more ice and explains your answer? Cawan kopi yang manakah memerlukan lebih banyak ais dan jelaskan jawapan anda?.... Explain how a new thermometer can be calibrated. Terangkan bagaimana termometer baru boleh ditentukurkan [4 marks]... [3 marks] Question 4.5 Explain why water is normally used as a cooling agent in a car engine. Terangkan mengapa air digunakan sebagai bahan penyejuk dalam enjin kereta [4 marks]

17 34 35 Question 4.6 Diagram 4.6 shows a cooling pad used to lower the temperature of a person having fever. The pad consists of a gel and is cooled in a refrigerator before it is placed on the forehead of the person to remove the heat. Rajah 4.6 menunjukkan satu pelapik penyejuk yang digunakan untuk menurunkan suhu seorang yang demam panas. Pelapik itu mengandungi satu jel dan disejukkan dalam peti sejuk sebelum diletakkan pada dahi orang itu untuk mengeluarkan haba. Cooling pad / Pelapik penyejuk How does one side of the curved surface of the spoon formed an upright image, while the other side formed an inverted image? Use ray diagrams to explain your answer. Bagaimanakah bahagian yang lengkung itu membentuk imej yang tegak, sementara bahagian yang satu lagi membentuk imej songsang? Gunakan rajah sinar untuk menerangkan jawapan anda. [6 marks] Question 5.2 Diagram 4.6 Rajah 4.6 Diagram 5.2 shows a driver that is driving under a hot sun, sees a pool of water appearing on the road ahead due to total internal reflection. Rajah 5.2 menunjukkan seorang pemandu yang sedang memandu pada hari yang panas ternampak tompokan air di hadapan disebabkan oleh pantulan dalam penuh. Explain how the heat is removed from the forehead of the person. Terangkan bagaimana haba dikeluarkan dari dahi orang itu [3 marks] Question 5.1 Image of the cloud seen as a pool of water Imej awan kelihatan seperti tompokan air kelihatan di atas jalan Diagram 5.2 Rajah 5.2 Diagram 5.1 shows a stainless steel spoon. When you look at the spoon, you will see an upright and virtual image of your face on one side of the curved surfaces but an inverted image on the other side. Rajah 5.1 menunjukkan satu sudu keluli tahan karat. Apabila anda memandang pada sudu itu, anda akan melihat imej muka yang tegak dan maya pada permukaan lengkung tetapi imej yang songsang pada bahagian sebelahnya. Explain how the pool of water appearing on the road. Terangkan bagaimana tompokan air kelihatan di atas jalan itu?... [ 5 marks] Question 5.3 Diagram 5.1 Rajah 5.1 Diagram 5.3 shows a ray of light is directed perpendicularly at a side of the semi circular glass block. Rajah 5.3 menunjukkan satu sinar cahaya ditujukan secara tegak ke sisi sebuah bongkah kaca semi bulatan.

18 36 37 Question 5.6 Diagram 5.6 shows an object placed in front of a concave mirror. A light ray travels from the object to the mirror through the centre of curvature of the mirror, C and reflects along the same path. Rajah 5.6 menunjukkan satu objek diletakkan di hadapan sebuah cermin cekung. Satu sinar cahaya bergerak dari objek ke cermin melalui pusat lengkungan cermin,c dan dipantulkan mengikut lintasan yang sama. Diagram 5.3 Rajah 5.3 Explain how total internal reflection occurs in Diagram 5.3 above? Terangkan bagaimana pantulan dalam penuh berlaku di dalam Rajah 5.3 di atas?... [ 4 marks] Question 5.4 Describe how you estimate the focal length of a convex lens. Huraikan bagaimana anda boleh menganggarkan jarak fokus bagi sebuah kanta cembung. [4 marks] Question 5.5 You are given two convex lenses, R and S, with focal lengths of 40 cm and 10 cm respectively. Both the lenses are used to build a compound microscope. Anda diberi dua buah kanta cembung, R dan S, dengan jarak fokus 40 cm dan 10 cm. Kedua-dua kanta tersebut digunakan untuk membina sebuah mikroskop majmuk. Explain how you would build a compound microscope. Terangkan bagaimana anda membina sebuah mikroskop majmuk. [6 marks] The light ray propagates toward the centre of curvature of the mirror, C is reflected along the same path. Explain your answer. Cahaya yang merambat ke pusat lengkungan cermin,c akan dipantulkan mengikut lintasan yang sama.jelaskan jawapan anda [ 4 marks ] Question 5.7 Explain how you are going to build a simple periscope when you are given two right angles prisms. Terangkan bagaimana anda dapat membina sebuah periskop ringkas apabila anda diberi dua prisma bersudut tepat.... [6 marks ] Question 5.8 object C Diagram 5.6 mirror Explain why a fish in a pond able to see objects around him although there are obstacles. Terangkan mengapa seekor ikan boleh melihat objek sekeliling walaupun terdapat Halangan F

19 [ 4 marks ] Question 5.9 With the help of a diagram, explain the working principle of an optical fibre. Dengan bantuan gambar rajah, jelaskan prinsip kerja satu serabut optik. Question 6.3 Explain why the speed of sound is greater in water than that in air? Terangkan mengapa halaju bunyi lebih tinggi dalam air berbanding dalam udara? [ 2 marks] Question 6.4 [4 marks] Diagram 6.4 shows an aeroplane fitted with a sound generator to reduce noise inside the aeroplane. Rajah 6.4 menunjukkan sebuah kapalterbang yang dipasang satu penjana bunyi untuk mengurangkan kebisingan dalam kapalterbang. Question 6.1 Two loudspeakers placed 1.5 m apart are connected to an audio signal generator. When a student walks at a distance in front of the loudspeakers he hears several consecutive loud and soft sounds. Dua pembesar suara ditempatkan 1.5 m secara bersebelahan disambungkan kepada satu penjana isyarat audio. Apabila seorang pelajar berjalan di hadapan dua pembesar suara itu, dia mendengar beberapa bunyi kuat dan lemah berturutan. Explain why. Terangkan mengapa. [4 marks] Question 6.2 Explain why the waves bend according to the shape of the shoreline when they are approaching the beach? Terangkan mengapa gelombang membengkok mengikut bentuk tepi pantai apabila ia menghampiri pantai? [4 marks] Diagram 6.4 Rajah 6.4 Explain how the device function to reduce noise inside the aeroplane? Terangkan bagaimanana alat tersebut berfungsi untuk mengurangkan kebisingan dalam pesawat? [4 marks] Question 6.5 Why diamond sparkles and colourful when light enter it. Terangkan mengapa intan berkilauan dan berwarna-warni apabila cahaya memasukinya. [3 marks]

20 40 41 Question 6.6 Diagram 6.6 shows a plane water wave propagates from deep water to the shallow water. Rajah 6.6 menunjukkan satu gelombang satah merambat dari kawasan dalam ke kawasan cetek yang berbentuk cembung. Sebuah kapal dapat mengukur kedalaman dasar laut. Terangkan bagaimana sebuah kapal dapat mengukur kedalaman dasar laut. [3 marks] Question 7.1 Diagram and shows two identical bulbs connected to one cell and two dry cell respectively. Rajah dan menunjukkan dua mentol yang serupa disambungkan kepada satu dan dua sel kering masing-masing. Explain what happens to the plane water wave before and after passing through the shallow water.you can use a diagram to explain your answer. Terangkan apa yang akan berlaku kepada gelombang satah apabila melalui kawasan air cetek dan selepas melaluinya. Anda boleh menggunakan gambar rajah untuk menjelaskan jawapan. [4 marks] Question 6.7 When a boy throws a large stone into a large still pond, the water waves is produced. Explain how the wave is produced? Apabila seorang budak lelaki melontar sebiji batu yang besar ke dalam sebuah kolam besar yang berair tenang, gelombang air dihasilkan. Terangkan bagaimana gelombang air terhasil? [ 2 marks] Question 6.8 A ship can measure the depth of the sea. Explain how a ship can measure the depth of the sea bed. Diagram Diagram Rajah Rajah Explain why the bulb connected to two dry cells is brighter. Terangkan mengapa mentol yang disambungkan kepada dua sel kering menyala lebih terang [ 3 marks ] Question 7.2 Explain why it is more dangerous to touch the live wire of a mains supply, rather than the neutral wire. Terangkan mengapa lebih merbahaya jika meyentuh wayar hidup bekalan kuasa berbanding wayar neutralnya. [2 marks]

21 42 43 Question 7.3 Diagram 7.3 shows the burning candle placed between a pair of parallel metal plates. Rajah 7.3 menunjukkan sebatang lilin yang menyala diletakkan diantara sepasang plat logam. Metal plates + E.H.T - [V.L.T] Switch Explain how the generator works to produce a direct current. Sketch a current-time graph to explain your answer. Terangkan bagaimana sebuah penjana berfungsi untuk menghasilkan arus terus. Lukiskan graf arus- masa untuk menerangkan jawapan anda. Diagram 7.3 Explain what will happen to the candle flame when the extra high voltage supply (E.H.T) is switch on? Terangkan apakah yang akan berlaku kepada nyalaan lilin apabila suis bekalan voltan tinggi (E.H.T) dihidupkan? [4 marks] Ouestion 8.2 Diagram 8.2 shows two thin copper strips, WX and YZ, connected to a circuit. Rajah 8.2 menunjukkan dua jalur kuprum, WX dan YZ yang disambungkan kepada satu litar. [4 marks] Question 7.4 Explain the advantages of connecting household appliances in parallel. Terangkan kelebihan menyambung perkakas elektrik rumah secara selari. [4 marks] Question 8.1 Diagram 8.1 shows a d.c. generator. Rajah 8.1 menunjukkan sebuah penjana a.t. Rotating coil Gegelung berputar Diagram 8.2 Explain what happen to copper strip WX and YZ when the switch is on. Terangkan apa yang berlaku kepada jalur kuprum WX dan YZ apabila suis dihidupkan. [4 marks] Question 8.3 Diagram 8.3 shows a bar magnet is hung on a spring that attached to a retort stand. The bar magnet is displaced downwards and released so it can oscillate through a solenoid which is connected to a centre-zero galvanometer. Rajah 8.3 menunjukkan satu magnet bar digantung pada satu spring yang dilekatkan pada kaki retot. Bar magnet itu disesarkan ke bawah dan dilepaskan supaya ia boleh berayun melalui satu solenoid yang disambungkan kepada sebuah galvanometer pusat-sifar. Diagram 8.1 Rajah 8.1

22 44 45 Diagram 8.3 When the bar magnet move towards the solenoid, the galvanometer pointer deflect for a while. Bila magnet bar bergerak mendekati solenoid, jarum galvanometer terpesong seketika. Explain why the galvanometer pointer deflects? Terangkan mengapa jarum galvanometer terpesong? [2 marks] Question 8.4 (a) (b) Diagram 8.4 Explain what happens to the copper rod when the switch is turned on. Terangkan apa yang berlaku kepada rod kuprum apabila suis dihidupkan.... [2 marks] The dry cells are replaced with 12 V a.c. Explain what happens to copper rod when the switch is turned on. Sel bateri ditukarkan dengan 12 V a.u.terangkan apa yang berlaku kepada rod kuprum apabila suis dihidupkan... [2 marks] Diagram 8.4 shows a set up used to study the effects of magnetic field of a current-carrying copper rod Rajah 8.4 menunjukkan susunan radas yang digunakan untuk mengkaji kesan medan magnet terhadap rod kuprum yang membawa arus elektrik. Question 8.5 Diagram 8.5 shows a d.c. electric motor. Rajah 8.5 menunjukkan sebuah motor elektrik a.t Diagram 8.5

23 46 47 Explain how the motor is able to rotate. Terangkan bagaimana motor tersebut boleh berputar. Question 8.7 Diagram 8.7 shows an electric bell connected to dry cells. Rajah 8.7 menunjukkan satu loceng elektrik yang disambungkan kepada sel-sel kering. Question 8.6 [4 marks] Diagram 8.6 shows a simple electromagnet consists of a solenoid with soft iron core inside. And, two magnet bars are hung freely at both sides of the solenoids. Rajah 8.6 menunjukkan satu elektromagnat ringkas yang terdiri daripada satu solenoid dililitkan pada teras besi lembut. Dan, dua bar magnet digantung dengan bebas berhampiran kedua-dua belah sisi solenoid tersebut. Diagram 8.7 Explain how the electric bell functions. Terangkan bagaimana loceng elektrik ini berfungsi. Diagram 8.6 Explain what happens to magnet P and magnet Q when the switch is on. Terangkan apa yang berlaku kepada kedua-dua bar magnet, P dan Q tersebut. Berikan sebabnya. [4 marks] [4 marks] Question 8.8 Explain the working principle of transformer. Terangkan prinsip kerja sebuah transformer. [4 marks]

24 48 49 Question 9.1 Explain how an n - type semiconductor is produced? Terangkan bagaimana semikonduktor jenis-n dihasilkan. Question 9.3 Diagram 9.3 shows a full wave rectifier circuit that forms a full wave rectification. Rajah 9.3 menunjukkan satu litar rektifikasi gelombang penuh. [4 marks] Question 9.2 Diagram 9.2 shows a Cathode-Ray Oscilloscope. Rajah 9.2 menunjukkan sebuah osiloskop sinar katod. Diagram 9.3 A capacitor is then placed across the output to smooth the current. Draw the wave form produced. Explain how a capacitor is used to smooth the current. Satu kapasitor diletakkan merentasi output untuk meratakan arus. Lukis bentuk gelombang yang terhasil. Terangkan bagaimana kapasitor digunakan untuk meratakan arus. Diagram 9.2 Explain how the Cathode-Ray Oscilloscope can be used to measure the potential difference of a dry cell. Terangkan bagaimana osiloskop sinar katod boleh digunakan untuk mengukur beza keupayaan satu sel kering. [3 marks] Question 9.4 Diagram 9.4 shows a light dependent resistance, LDR, used in transistor circuit to control a road lamp labeled 240 V. 100 W. Rajah 9.4 menunjukkan perintang peka cahaya digunakan dalam litar transistor untuk mengawal lampu jalan yang berlabel 240 V, 100 W [4 marks]

25 50 51 Relay 240 V lamp 240V,100W Terangkan mengapa sumber radioaktif yang memancarkan sinar α dan sinar γ tidak sesuai digunakan.... R 1 [2 marks] Diagram 9.4 At night the road lamp is switched on automatically. Explain how the circuit function at night. Pada waktu malam lampu jalan dihidupkan secara automatik. Jelaskan bagaimana litar itu berfungsi pada waktu malam. [2 marks] Question 10.1 A factory produces aluminium plate 1 mm thick. The thickness of aluminium plate can be detected by a detector which is connected to radioactive counter equipment as shown in Diagram Radioactive source emitting β ray is used. Sebuah kilang menghasilkan kepingan aluminium setebal 1 mm. Ketebalan kepingan aluminium boleh dikesan dengan satu pengesan yang disambungkan kepada suatu pembilang seperti dalam Rajah Sumber radioaktif yang memancarkan sinar beta β digunakan. 6 V Question 10.2 Radioisotope Strontium-90 is used to measure the thickness of paper in a paper industry. Explain how Strontium-90 is used to measure the thickness piece of paper? Radiosotop Strontium-90 digunakan untuk mengukur ketebalan kertas di kilang kertas. Terangkan bagaimana Strontium-90 digunakan untuk mengukur ketebalan sehelai kertas?. [4 marks] Question 10.3 What is nuclear fission and nuclear fusion? Explain how nuclear fission and nuclear fusion reactions are able to release energy. Apakah pembelahan nukleus dan pelakuran nukleus? Huraikan bagaimana tindak balas pembelahan nukleus dan pelakuran nukleus boleh membebaskan tenaga. [2 marks] Question 10.4 Diagram 10.1 Explain why radioactive source that emitted α ray andγ ray are not suitable? Diagram 10.4 shows an application of radioactive substances in agriculture in studying the intake of fertilizer by plants. Rajah 10.4 menunjukkan satu aplikasi bahan radioaktif dalam pertanian dalam mengkaji penggunaan baja oleh tumbuhan.

26 52 53 G-M tube Tiub G-M Terangkan bagaimana suatu bahan radioaktif boleh digunakan untuk mengesan kedudukan kebocoran itu. Ratemeter Meterkadar Diagram 10.4 Rajah 10.4 [4 marks] Explain how the study is carried out. Jelaskan bagaimana kajian itu dijalankan. Question 10.5 Diagram 10.5 shows an underground water pipe which has a leak. Rajah 10.5 menunjukkan suatu paip bawah tanah yang bocor. Water pipe / Paip air Location of leakage Kedudukan kebocoran [4 marks] 1 m Diagram 10.5 Rajah 10.5 Explain how a radioactive substance can be used to detect the location of the leakage.

27 54 55 A boat floating on the surface of water in the sea. The volume of the boat that sinks in sea water is 250 m 3 and the density of sea water is 1080 kgm -3, calculate (a) upthrust which acts on the boat. (b) the volume of water displaced when the boat is in the river. [Density of river water = 1000 kgm -3 ] [ 4 Marks ] 1 2 Two types of application, quantitative (calculation)or qualitative Apply the related physics knowledge, physics skill or formulae Answer (a) Upthrust = mass of sea water displaced = mg = Vρg = 250 X 1080 X 10 = 2.7 X 10 6 N (b) 2. 7 X 10 6 = V X 1000 X 10 V = 270 m 3 Example 2 Daw a ray diagram from a coin to the eye to show how the image of the coin is formed. 3 For calculation write the correct equation, make correct substitution and give the correct answer with the correct unit. [ 3 Marks ] Example 1 Answer

28 56 57 Two groups of students are asked to estimate the mass of a pendulum bob. The results of the two groups are shown in Diagram 1.1. Dua kumpulan pelajar diminta menganggar jisim sebuah ladung bandul. Keputusan kedua-dua kumpulan itu adalah seperti yang ditunjukkan dalam Rajah g, 60 g, 50 g, 50 g 40 g, 55 g, 70 g, 60 g Group 1 Kumpulan 1 Group 2 Kumpulan 2 Diagram 1.1 Rajah 1.1 Calculate the average mass of a pendulum bob for both group Kirakan Jisim purata ladung tersebut bagi kedua-dua kumpulan Question 1.2 Diagram 1.2 shows a micrometer screw gauge is used in a measurement. Rajah 1.2 menunjukkan tolok skru mikrometer yang digunakan dalam satu pengukuran Diagram 1.2 Rajah 1.2 If the micrometer screw gauge has zero error of mm, the actual reading of the micrometer screw gauge is Jika ralat sifar tolok skru mikrometer ialah mm, bacaan sebenar tolok skru mikrometer itu ialah Question 1.1. Question 2.1.

29 58 59 Table 2.1 shows the results of an experiment to investigate the relationship between the force and extension of a piece of rubber band. Jadual 2.1 menunjukkan keputusan suatu eksperimen untuk menyiasat hubungan antara daya dan pemanjangan seutas gelang getah. Ali kicks a ball with a force of 50 N and the time of impact between his boot and the ball is 0.2s. What is the change in momentum of the ball? Ali menendang sebiji bola g dengan daya 50 N dan masa pelanggaran di antara but dan bola ialah 0.2 s. Berapakah perubahan momentum bola itu? Force / N Daya / N Length / cm Panjang / cm Extension / cm Pemanjangan / cm x Table 2.1 Jadual 2.1 Question 2.4 Diagram 2.4 shows a wooden block experiences an acceleration when it is pulled by a force F The frictional force of 10 N acting on the wooden block. Rajah2.4, menunjukkan sebuah bongkah kayu mengalami pecutan bila ditarik dengan daya F. Daya geseran sebanyak 10 N bertindak ke atas blok kayu itu. What is the value of x? Apakah nilai x? F Friction force, 10 N Daya geseran, 10 N Question 2.2. The pulling force, F is Diagram 2.4 Rajah 2.4 Diagram 2.2 shows the journey of a bus from city A to reach city D. Rajah 2.2 menunjukkan pergerakan bas dari bandar A ke bandar D. A 100 km D 40 km Question 2.5. A racing motorcycle of mass 202 kg accelerates from rest to its maximum velocity of 160 kmh -1 in 10 s. Sebuah motorsikal perlumbaan dengan jisim 202 kg memecut dari keadaan rehat ke halaju maksima 60 ms -1 dalam 10 s. (i) Calculate the acceleration of the racing motorcycle. Hitungkan pecutan motorsikal perlumbaan tersebut. B 80 km C (ii) Calculate the force acting on the racing motorcycle. Hitungkan daya yang bertindak ke atas motorsikal perlumbaan tersebut. Diagram 2.2 Rajah 2.2 What is the displacement of the bus? Berapakah sesaran bas? Question 2.3 Question 2.6.

30 60 61 Diagram 2.6 shows a motion graph of a body. Rajah 2.6 menunjukkan graf gerakan satu jasad. Speed / m s -1 Laju Time / s masa Diagram 2.6 Rajah 2.6 What is the total distance traveled of the body? Berapakah jumlah jarak yang dilalui oleh jasad itu? Question 3.2. Diagram 3.2 shows a simple barometer. Rajah 3.2 menunjukkan sebuah barometer ringkas. 65 cm Trapped air Udara terperangkap Mercury Merkuri Diagram 3.2 If the atmospheric pressure is 76 cm Hg, calculate the pressure of the trapped air in the glass tube. Jika tekanan atmosfera ialah 76 cm Hg, hitungkan tekanan udara yang terperangkap dalam tiub kaca. Question 3.1. Diagram 3.1 shows a container containing water. Rajah 3.1 menunjukkan bekas yang berisi air. Question 3.3 Diagram 3.3 shows a model of a hydraulic jack. The force F 1 applied on the small piston R is able to support two loads which placed on piston S and T. Rajah 3.3 menunjukkan sebuah model jek hidraulik. Daya F 1 bertindak pada omboh kecil R untuk menyokong dua beban yang diletakkan pada omboh S dan T. F 1 F 2 F 3 Water 3.0 m 0.7 m R A R = 2 2 Diagram 3.1 Rajah 3.1 What is the pressure exerted by the water at X? Berapakah tekanan yang dihasilkan oleh air pada titik X? [Water density / ketumpatan air = kg m 3 ] S A S = 5 Diagram 3.3 Rajah 3.3 T S A T = 15 2

31 62 63 (i) If F 1 = 5.0 N, calculate the pressure exerted on piston R. Jika F 1 = 5.0 N, hitungkan tekanan yang dikenakan pada omboh R. (ii) Determine the magnitude of the force F 2. Tentukan magnitude daya F 2. Question 3.4. Diagram 3.4 shows a hydraulic pump is used to raise a car of mass 1600 kg. Rajah 3.4 menunjukkan satu pam hidraulik diguna untuk mengangkat sebuah kereta berjisim 1600 kg. Question 4.1 Four different metals of equal masses, W, X, Y and Z are of equal mass and initially are at the room temperature of 25 o C. The heat absorbed, Q, by each metal to achieve the final temperature, θ, is shown in Table 4.1. Empat logam berlainan W, X, Y dan Z mempunyai jisim yang sama dan pada awalnya berada pada suhu bilik, 25 o C. Haba yang diserap, Q, oleh setiap logam untuk mencapai suhu akhir, θ,, adalah ditunjukkan dalam Jadual 4.1. Metal Logam Heat absorbed, Q / J Haba diserap, Q / J θ / o C W X Y Z Table 4.1 Jadual 4.1 Which metal has the highest specific heat capacity? Logam yang manakah mempunyai muatan haba tentu yang paling tinggi? Question 4.2. Diagram 3.4 Rajah 3.4 The ratio of the diameter of the larger piston to the diameter of the smaller piston is 4:1. What is the force required to raise the car? 50 g of water at 10 o C is mixed with 100 g of water at 30 o C. What is the temperature of the mixture? 50 g air pada 10 o C dicampurkan dengan 100 g air pada 30 o C. Berapakah suhu campuran itu?

32 64 65 Question 4.3 Diagram 4.3 shows the length of an air column trapped at 27 o C. Rajah 4.3, menunjukkan panjang turus udara terperangkap pada 27 o C. mercury merkuri (a). What is the time taken by substance X to achieve melting point? Berapakah masa yang diambil oleh bahan X untuk mencapai takat lebur? (b). Based on information on graph, find specific latent heat for the substance X. Berdasarkan maklumat yang diberi pada graf, hitungkan haba pendam tentu bagi bahan X air udara Diagram 4.3 Rajah 4.3 Question 5.1 Diagram 5.1 is a ray diagram showing the image I of an object O that is formed by a lens. Rajah 5.1 ialah gambarajah sinar yang menunjukkan pembentukan imej I bagi satu objek O oleh suatu kanta. What is the length of the air column at 100 o C? Berapakah panjang turus udara pada 100 o C? Question 4.4. Substance X with mass 0.5 kg is heated by using a heater 100 W. Diagram 4.4 shows graph temperature against mass for the substance. Suatu bahan X berjisim 0.5 kg dipanaskan dengan menggunakan pemanas 100 W. Rajah 4.4 menunjukkan graf suhu melawan masa bagi bahan tersebut. Diagram 5.1 Rajah 5.1 What is the magnification of the image? Apakah pembesaran bagi imej itu? m=v/u = 25/10 = 2.5 Question 5.2. An object of 3 cm height is placed 15 cm from a convex lens. The image is formed at 30 cm from the lens. What is the height of the image? h i=6 cm Diagram 4.4 Rajah 4.4 Question 5.3 The refractive index of water is 3 4. What is the apparent depth of a column of water With the height of 30 cm?

33 66 67 Question 5.4. Diagram shows two cars, P and Q, travelling in the opposite directions, passing through a sharp band. A mirror is placed at X. Rajah menunjukkan dua buah kereta P dan Q, bergerak ada arah yang bertentangan, melalui satu selekoh tajam. Sebuah cermin dletakkan pada X. Diagram Rajah (b) (i) Complete the ray diagram in Diagram Lengkapkan gambar rajah sinar pada Rajah Diagram shows an incomplete ray diagram when a curve mirror is placed at X to replace the plane mirror in Diagram The curve mirror is used to overcome the problem that occur in (a)(i). Rajah menunjukkan sau gambar rajah sinar yang tidak lengkap apabila sebuah cermin melengkung diletakkan pada kedudukan bagi menggantikan cermin satah dalam Rajah Cermin melengkung itu digunakan bagi mengatasi masalah yang terdapat dalam (a)(i). [2 marks] Diagram 5.4 Rajah 5.4 (a) Diagram shows an incomplete ray diagram when a plane mirror is placed at X. Rajah menunjukkan satu gambar rajah sinar yang tidak lengkap apabila sebuah cermin satah diletakkan pada kedudukan X. Diagram Rajah 5.4.3

34 68 69 (i) Complete the ray diagram in Diagram Lengkapkan gambar rajah sinar dalam Rajah [2 marks] Based on the displacement-distance graph of a wave, find (a) the amplitude (b) the wavelength of the wave Question 6.1. In an experiment, Yanie observes that a simple pendulum completes 30 oscillations in 15.0 seconds. What is (a) the frequency of oscillation? (b) the period of oscillation? Question 6.2. Diagram 6.2 shows a graph displacement time Question 6.4 A transverse wave is found to have a distance of 4 cm from a trough to a crest, a frequency of 12 Hz, and a distance of 5 cm from a crest to the nearest trough. Determine (a) the amplitude (b) period (c) wavelength (d) speed DDDiagram D Using diagram 6.2, calculate : (a) (b) (c) amplitude period frequency = 0.5 s Question 6.5 Show the pattern of the reflection of the water waves (a) (b) Question 6.3. Diagram 6.3 shows a graph displacement distance. = 4s 3 3. = 0.25 HzDDiagram 6.3

35 70 71 Question 6.6 Show the dark and bright pattern on the screen below. Question 6.8 Complete the diagrams below by drawing the wavefronts to show the diffraction of water waves. (a) Narrow gap λ (b) Wider gap > λ Water waves Ripple tank Screen Question 6.7 (c)wider obstacle (d) Narrow obstacle (a) (b) (c) (d) Question 6.9 Complete the table below. (e) (f)

36 72 73 Question 6.10 Categorize each labeled position as being a position where either constructive or destructive interference occurs. Question The diagram below shows the pattern of spectrum electromagnetic. In the boxes provided, write the names of the parts given. Radiowave microwave gamma ray x-ray visible ray infra-red ray ultraviolet ray wavelength (a) Constructive interference:. (b) Destructive interference:.. Gamm a ray X- ray Ultra Violet Visible light infrare d microwa ve radiowa ve Question 6.11 frequency In a Young s double slit experiment, a light of wavelength 633 nm passes through two slit which are 0.5 mm apart. Vertical fringes are observed on a screen placed 4 m from the slits. (a) Calculate the distance between two adjacent bright fringes (b) What will happen to the distance between two adjacent bright fringes if a light of shorter wavelength is used? Question 6.12 Sound waves with frequency of 5.8 x 10 5 Hz are used to determine the depth of the sea. The speed of sound waves in sea water is 1250 ms-1. The time-base of the is adjusted at 50 ms cm -1. If the time interval between the transmitting and receiving a pulse of waves is 1.2 s. Calculate Gelombang bunyi berfrekuensi 5.8 x 105 Hz digunakan untuk menentukan Laju gelombang air ialah 1250 ms-1. Dasar- masa bagi osiloskop dilaraskan pada 50 ms cm-1. Jika sela masa di antara denyutan gelombang tuju dan gelombang yang diterima adalah 1.2 s. Hitung Question 7.1 Draw the pattern of the electric field lines. ELECTRIC FIELD AROUND A POSITIVE CHARGE (a) the depth of the sea. kedalaman laut ELECTRIC FIELD AROUND A NEGATIVE CHARGE (b) the wavelength of the sound wave. panjang gelombang bagi gelombang bunyi

37 Compare ELECTRIC FIELD AROUND A POSITIVE AND NEGATIVE CHARGE ELECTRIC FIELD AROUND A POSITIVE CHARGE AND A NEGATIVELY CHARGED PLATE ELECTRIC FIELD AROUND TWO NEGATIVE CHARGES ELECTRIC FIELD BETWEEN TWO CHARGED PARALLEL PLATES ELECTRIC FIELD AROUND TWO POSITIVE CHARGES Question 7.2 ELECTRIC FIELD AROUND A NEGATIVE CHARGE AND A POSITIVELY CHARGED PLATE The graph shows a graph of I against V for threeconductors, P, Q and R. Q (a) the resistance of conductor P, Q andr. (b) Explain your answer in (a)

38 76 77 Question 7.3 Identical light bulbs, each of resistance R Ω, are connected in three circuits as shown in Diagram Mentol-mentol yang serupa, setiap satu mempunyai rintangan R Ω, disambung dalam tiga litar seperti ditunjukkan dalam Rajah Diagram 7.4 Diagram 7.4 shows photograph of an electric circuit. The circuit contains four identical bulbs connected to four identical new dry cells Rajah 7.4 menunjukkan forograf bagi satu litar elektrik. Litar itu mengandungi empat mentol serupa disambung kepada empat sel kering baru yang serupa. A A A V V Circuit X / Litar X Circuit Y / Litar Y Circuit Z / Litar Z Diagram Rajah The rheostat in each circuit is adjusted and the potential difference, V, against current, I, graphs are plotted for each circuit. The graph for each circuit is shown in Diagram Reostat di dalam setiap litar dilaras dan graf beza keupayaan, V, melawan arus, I, diplot untuk setiap litar. Graf yang diperoleh adalah seperti yang ditunjukkan dalam Rajah V V/V V/V V/V Diagram 7.4 Diagram 7.4 Draw an electric circuit diagram for the above arrangement of apparatus using appropriate symbols. Lukiskan satu rajah litar elektrik bagi susunan radas diatas dengan menggunakan simbol-simbol yang sesuai Graph K / Graf K I/A Graph L / Graf L I/A Graph M / Graf M I/A Diagram Rajah Match the graphs K, L and M to the circuits X, Y and Z. Padankan graf K, L dan M kepada litar X, Y dan Z. [2 marks] Circuit / Litar Graph / Graf X Y Z [3 marks] QUESTION 7.5

39 78 79 Question 8.2 Draw the combination (called catapult field) of two electromagnetic fields below and show the direction of movement of the conductor. N S N S + = A voltmeter connected directly across a battery gives a reading of 1.5 V. The voltmeter reading drops to 1.35 V when a bulb is connected to the battery and the ammeter reading is 0.3 A. Find the internal resistance of the battery. Question 8.3 Diagram shows a bicycle dynamo. [ 3 Marks ] Rajah menunjukkan sebuah dinamo basikal. Question 7.6 A current of 5A flows through an electric heater when it is connected to the 24 V mains supply. How much heat is released after 2 minutes? Question 8.1 Using the diagram, complete the steps to switch on the magnetism effect. Soft iron core switch switch [ 2 Marks ] Soft iron core Diagram The dynamo contains a rotating permanent magnet and a fixed coil. As the magnet rotates, an induced current is produced. Dinamo terdiri daripada sebuah magnet kekal yang berputar dan satu gegelung tetap. Apabila magnet berputar, arus aruhan dihasilkan. DC supply Insulated wire DC supply Insulated wire pins pins Switch is closed Diagram 8.3.2

40 80 81 Question 8.4 Diagram 8.4 shows a modified transformer. Rajah 8.4 menunjukkan sebuah transformer yang telah diubahsuai. Diagram Diagram 8.4 (a) The number of turns on the primary coil in diagram 8.4 is Calculate the number of turns on the secondary coil. Bilangan lilitan pada gegelung primer pada Rajah 8.4 ialah Hitung bilangan lilitan pada gegelung sekunder. (b) The transformer in Diagram 8.4 is used to switch on an electrical appliance. The current in the primary coil is 0.1 A and the efficiency is 85%. Transformer dalam Rajah 8.4 digunakan untuk menghidupkan sebuah alat elektrik. Arus yang mengalir dalam gegelung primer ialah 0.1 A dan kecekapannya ialah 85%. Calculate the output power of the transformer. Hitung kuasa output transformer itu. Diagram (b) (i) Based on Diagrams and 8.3.3, compare the relative motions between the magnet to the coil. Berdasarkan Rajah dan 8.3.3, bandingkan gerakan relatif antara magnet dengan gegelung. [ 1 mark ] (ii) Based on Diagram and 8.3.4, compare the number of turns of the coils. Question 9.1 Diagram 9.1.1shows the structure of a cathode ray oscilloscope (CRO). Rajah menunjukkan struktur sebuah osiloskop sinar katod (OSK). X Y Z Screen Skrin Berdasarkan Rajah dan 8.3.4, bandingkan bilangan lilitan gegelung. [ 1 mark ] (iii) Based on Diagram and 8.3.4, relate the number of turns of the coil with the change in magnetic flux and the magnitude of induced current. Berdasarkan Rajah dan 8.3.4, hubungkaitkan bilangan lilitan gegelung dengan magnitud perubahan fluks magnet dan magnitud arus aruhan. [ 2 marks ] Diagram Rajah s / div 4 V / div s / div : s / bhg V / div : V / bhg Diagram Rajah 9.1.2

41 82 83 (a) A student uses the CRO to study the output voltage from a bicycle dynamo. Diagram shows the trace on the screen and the settings of the CRO. Seorang pelajar menggunakan OSK itu untuk mengkaji voltan output daripada sebuah dinamo basikal. Rajah menunjukkan surih dan pelarasan pada skrin OSK itu. (i) (ii) State the type of current produced by the dynamo. Nyatakan jenis arus yang dihasilkan oleh dinamo itu.... Determine the frequency of the output voltage of the dynamo. Tentukan frekuensi bagi voltan output dinamo itu. [1 mark] Question 9.2 Diagram shows the output of a transformer connected to a semiconductor diode and a resistor R Diagram shows the output of a transformer connected to four semiconductor diodes and a resistor R Rajah menunjukkan output sebuah transformer disambungkan kepada sebuah diod semikonduktor dan perintang R. Rajah menunjukkan sambungan output transformer kepada empat buah diod semikonduktor dan perintang R. [2 marks] (iii) Sketch the new trace in Diagram if the time-base setting is now set at 0.01 s/div. Lakarkan surih baru dalam Rajah jika dasar-masa ditetapkan pada 0.01 s / bhg. (a) Based on diagram and compare the type of current produced by the output of the transformer and the current that flows through R. Name the process involved. Berdasarkan Rajah dan Rajah bandingkan keadaan arus yang dihasilkan oleh output transformer dan arus yang mengalir melalui R. Namakan proses terlibat. [5 marks] 0.01 s / div 4 V / div Diagram Rajah [1 mark]

42 84 85 Question 9.3 Diagram 9.3 shows an electrical circuit to detect temperature of water whilst boiling an egg. When the egg is ready to serve, the siren will go off and the base voltage, V b is at least 1.5 V. Diagram shows a logic gate NAND. A and B are the inputs and C is the output. Rajah menunjukkan satu get logik TAKDAN. A dan B adalah input manakala C adalah ouput. Rajah 9.3 menunjukkan litar elektrik untuk mengesan suhu air semasa merebus telur. Apabila telur tersebut telah masak, siren akan berbunyi dan voltan tapak, V b mestilah sekurang-kurangnya 1.5 V. Diagram Rajah (a) Complete the truthtable of the logic gate NAND. Lengkapkan jadual kebenaran bagi get logik TAKDAN di dalam jadual Input Output A B C (a) Diagram 9.3 Rajah 9.3 In Diagram 9.3, complete the symbol of the transistor and name the type of transistor used in the circuit.. Dalam Rajah 9.3, lengkapkan simbol transistor dan namakan jenis transistor yang digunakan dalam litar itu. [2 marks] (b) Diagram shows the combination of NAND gates in an electronic circuit. Rajah menunjukkan kombinasi beberapa get TAKDAN di dalam satu litar elektronik. (b) If the siren is functional, what is the maximum potential difference across R 1? Jika siren berbunyi, berapakah beza keupayaan maksima yang merentasi R 1?... [1 mark] Diagram Rajah Question 9.4 (i) Based on the combination, complete the truth table as shown in the table below.

43 86 87 Question 10.1 Berdasarkan kombinasi tersebut, lengkapkan jadual kebenaran di dalam jadual di bawah (ii) Draw the symbol of logic gate that is equivalent to the combination of logic gates as shown in diagram. Lukiskan symbol get logic seperti yang dinyatakan di dalam soalan b (ii) di atas. Complete the equation to show the emission of alpha particle (a) Input Output P Q R S T [ 3 marks ] [ 1 mark ] A radioactive of gamma rays has a half life of 4 days. A Geiger counter placed 3 m from the source initially has a count rate of per minute. After 8 days, the counter is moved back to a distance of 6 m from the source and its rate, in counts per minute is then. Question 10.3 Table 10.3 shows reading of the rate meter for 6 bottles through detector and radioactive source?. Jadual 10.3 menunjukkan bacaan meter kadar bagi 6 botol yang melalui pengesan dan sumber radioaktif. Bottle/Botol A B C D E F Rate meter reading/bacaan meter kadar (count per minute/bilangan per minit) Table 10.3 (a) Which bottle shows least volume of juice? Botol yang manakah menunjukkan isipadu yang tidak cukup?. [ 1 mark] (b) State your reason for the answer in 1(i). Nyatakan sebab jawapan anda di 1(i).. [ 2 marks] QUESTION 10.4 (b) The following equation shown a fusion reaction H H He energy n u u u u (c) [ 1 u = 1.66 x kg, c = 3.00 x 10 8 m s 1 ] What is the energy produced? Question 10.2